fuse: kill req->intr_unique

This field is not needed after the previous patch, since we can easily
convert request ID to interrupt request ID and vice versa.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/fuse/dev.c

@@ -1095,12 +1095,11 @@ __releases(fiq->waitq.lock)
 	int err;
 
 	list_del_init(&req->intr_entry);
-	req->intr_unique = (req->in.h.unique | FUSE_INT_REQ_BIT);
 	memset(&ih, 0, sizeof(ih));
 	memset(&arg, 0, sizeof(arg));
 	ih.len = reqsize;
 	ih.opcode = FUSE_INTERRUPT;
-	ih.unique = req->intr_unique;
+	ih.unique = (req->in.h.unique | FUSE_INT_REQ_BIT);
 	arg.unique = req->in.h.unique;
 
 	spin_unlock(&fiq->waitq.lock);
@@ -1808,7 +1807,7 @@ static struct fuse_req *request_find(struct fuse_pqueue *fpq, u64 unique)
 	struct fuse_req *req;
 
 	list_for_each_entry(req, &fpq->processing, list) {
-		if (req->in.h.unique == unique || req->intr_unique == unique)
+		if (req->in.h.unique == unique)
 			return req;
 	}
 	return NULL;
@@ -1882,12 +1881,12 @@ static ssize_t fuse_dev_do_write(struct fuse_dev *fud,
 	if (!fpq->connected)
 		goto err_unlock_pq;
 
-	req = request_find(fpq, oh.unique);
+	req = request_find(fpq, oh.unique & ~FUSE_INT_REQ_BIT);
 	if (!req)
 		goto err_unlock_pq;
 
-	/* Is it an interrupt reply? */
-	if (req->intr_unique == oh.unique) {
+	/* Is it an interrupt reply ID? */
+	if (oh.unique & FUSE_INT_REQ_BIT) {
 		__fuse_get_request(req);
 		spin_unlock(&fpq->lock);
 

fs/fuse/fuse_i.h

@@ -311,9 +311,6 @@ struct fuse_req {
 	/** refcount */
 	refcount_t count;
 
-	/** Unique ID for the interrupt request */
-	u64 intr_unique;
-
 	/* Request flags, updated with test/set/clear_bit() */
 	unsigned long flags;